code: def __str__(self):
      return (
          f"blockmatrix {{element_type: {self.element_type}, shape: {self.shape}, "
          f"is_row_vector: {self.is_row_vector}, block_size: {self.block_size})"
      )
  
file_path: hail/hail/python/hail/expr/blockmatrix_type.py
imports: import pprint
  from hail.typecheck import typecheck_method, sequenceof
  from hail.utils.java import jiterable_to_list
  from hail.expr.types import dtype, hail_type
label_desc: Use image node_id 8 for calling the tblockmatrix obj's underlying member method code with example usage: obj.__str__() and returns: str, self, str, self, str, self, str, self, str